6. 39. 8. Desktop Help Applications
import java.awt.Desktop; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.net.URI; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; public class DesktopDemo { static Desktop desktop; public static void main ( String [] args ) { if ( Desktop.isDesktopSupported ()) { desktop = Desktop.getDesktop () ; } else { System.out.println ( "Desktop class is not supported" ) ; System.exit ( 1 ) ; } JMenuItem openItem = new JMenuItem ( "Open" ) ; JMenuItem editItem = new JMenuItem ( "Edit" ) ; JMenuItem printItem = new JMenuItem ( "Print" ) ; JMenuItem browseToItem = new JMenuItem ( "Go to www.java2s.com" ) ; JMenuItem mailToItem = new JMenuItem ( "Email to [email protected] " ) ; JMenu fileMenu = new JMenu ( "File" ) ; JMenu mailMenu = new JMenu ( "Email" ) ; JMenu browseMenu = new JMenu ( "Browser" ) ; openItem.addActionListener ( new ActionListener () { public void actionPerformed ( ActionEvent e ) { JFileChooser chooser = new JFileChooser () ; if ( chooser.showOpenDialog ( null ) == JFileChooser.APPROVE_OPTION ) { try { desktop.open ( chooser.getSelectedFile () .getAbsoluteFile ()) ; } catch ( Exception ex ) { ex.printStackTrace () ; } } } }) ; fileMenu.add ( openItem ) ; editItem.addActionListener ( new ActionListener () { public void actionPerformed ( ActionEvent e ) { JFileChooser chooser = new JFileChooser () ; if ( chooser.showOpenDialog ( null ) == JFileChooser.APPROVE_OPTION ) { try { desktop.edit ( chooser.getSelectedFile () .getAbsoluteFile ()) ; } catch ( Exception ex ) { ex.printStackTrace () ; } } } }) ; fileMenu.add ( editItem ) ; printItem.addActionListener ( new ActionListener () { public void actionPerformed ( ActionEvent e ) { JFileChooser chooser = new JFileChooser () ; if ( chooser.showOpenDialog ( null ) == JFileChooser.APPROVE_OPTION ) { try { desktop.print ( chooser.getSelectedFile () .getAbsoluteFile ()) ; } catch ( Exception ex ) { ex.printStackTrace () ; } } } }) ; fileMenu.add ( printItem ) ; browseToItem.addActionListener ( new ActionListener () { public void actionPerformed ( ActionEvent e ) { try { URI browseURI = new URI ( "www.java2s.com" ) ; desktop.browse ( browseURI ) ; } catch ( Exception ex ) { System.out.println ( ex.getMessage ()) ; } } }) ; browseMenu.add ( browseToItem ) ; mailToItem.addActionListener ( new ActionListener () { public void actionPerformed ( ActionEvent e ) { try { URI mailURI = new URI ( "mailto:[email protected] " ) ; desktop.mail ( mailURI ) ; } catch ( Exception ex ) { System.out.println ( ex.getMessage ()) ; } } }) ; mailMenu.add ( mailToItem ) ; JMenuBar jMenuBar = new JMenuBar () ; jMenuBar.add ( fileMenu ) ; jMenuBar.add ( browseMenu ) ; jMenuBar.add ( mailMenu ) ; JFrame frame = new JFrame () ; frame.setTitle ( "Desktop Helper Applications" ) ; frame.setSize ( 300 , 100 ) ; frame.setDefaultCloseOperation ( JFrame.EXIT_ON_CLOSE ) ; frame.setJMenuBar ( jMenuBar ) ; frame.setVisible ( true ) ; } }
